CC33FF88 detection in N detection in N22 pixel volume pixel volume
environmentenvironment
Rusty Boyd, Martin Doubek, Jan Godlewski
Greg Hallewell Sasha Rozanov,Vic Vacek
ATLAS ID Sonar Coolant analysis kickoff meeting, CERN, Dec 6 2009
Transmittingtransducer
Receiving transducer
Temperature sensors
L
CoolantInsulation
TransmitterDriver
Triggergenerator
DC biassupply
Amplifiercomparator
Latch
4mHzreadout
clock
Computer
45 kHzoscilator
Pressure gauge
Not a new idea: CNot a new idea: C55FF1212/N/N22 mixed for SLD RICH mixed for SLD RICH
and analysed by sonar (1988and analysed by sonar (1988))
Pixel group wants with an analysis Pixel group wants with an analysis of possible Cof possible C33FF88 leaks leaks
into the pixel nitrogen volume. into the pixel nitrogen volume.
This involves the attachment of one or two This involves the attachment of one or two temperature-monitored sonar analysis tubes temperature-monitored sonar analysis tubes (fabricated at CPPM with transducers installed) (fabricated at CPPM with transducers installed) at the output of sniffer pipes from the Pixel at the output of sniffer pipes from the Pixel nitrogen volume made available in USA15, nitrogen volume made available in USA15,
described here described here
Development System
Driver Logic AnalyzerAmpDisc.
Off line
Analysis
Transducer TransducerSignal generation, real time analysis, DAQ
- Sonar tube (or 2 tubes*) with pairs of Polaroid 6000 - Sonar tube (or 2 tubes*) with pairs of Polaroid 6000 transducers located a known distance apart transducers located a known distance apart
- - To start with: SLAC driver, receiver/discriminator boxesTo start with: SLAC driver, receiver/discriminator boxes
- Thermostatic bath / recirculator circulating ethylene - Thermostatic bath / recirculator circulating ethylene glycol through cooling loop on sonar tube glycol through cooling loop on sonar tube
- - Readout for temperature and pressure sensorsReadout for temperature and pressure sensors on sonar tube on sonar tube
- Logic analyzer to emulate previous SLAC readout system - Logic analyzer to emulate previous SLAC readout system (gated 50 kHz sound pulses, fast transit time clock) (gated 50 kHz sound pulses, fast transit time clock)
- Vacuum pump to evacuate tube, various valves, - Vacuum pump to evacuate tube, various valves, exhaust bubblers, insulation etc exhaust bubblers, insulation etc
* * Possibility of 2Possibility of 2ndnd tube & active C filter for TRT CO tube & active C filter for TRT CO22 leak study leak study
..
Requirements for CRequirements for C33FF88/N/N22
analyzer in USA15analyzer in USA15
Sniffer tubeentry here
TRT table
Sniffer tubeEntry here
Material delivered to Jan Godlewski for this installation:Material delivered to Jan Godlewski for this installation:
- 56 cm Sonar tube with pair of Polaroid 6000 transducers - 56 cm Sonar tube with pair of Polaroid 6000 transducers
- 5 pneumatically-actuated sampling valves with OPEN/CLOSE- 5 pneumatically-actuated sampling valves with OPEN/CLOSE indicators and Honeywell/Skinner K2P3LO actuators indicators and Honeywell/Skinner K2P3LO actuators
(5V 100mA,TTL Open Collector interfaceable) on air manifold (5V 100mA,TTL Open Collector interfaceable) on air manifold
- 2 Bubblers for back-to-back anti-syphon installation- 2 Bubblers for back-to-back anti-syphon installation
Other requirements:Other requirements:
- Rack- Rack- Vacuum pump to evacuate tube- Vacuum pump to evacuate tube- Various hand valves, insulation etc- Various hand valves, insulation etc
* * Possibility of 2Possibility of 2ndnd tube & active C filter for TRT CO tube & active C filter for TRT CO22 leak study leak study - - Assembly, test, installation manpowerAssembly, test, installation manpower- Dedicated computer interfacing to ATLAS network via ethernet- Dedicated computer interfacing to ATLAS network via ethernet
..
* = PT100
Back-to-back Bubblers (anti-syphon)
in vented boxes
Sampling lines from different tracker envelope regions,
entering USA15 from UX15
Active Carbon filter for CO2 removal(replacable or in-situ regenerable)
*
Thermostatic bathrecirculator
Jacketed sonar tube 1:C3F8 in N2
Jacketed sonar tube 2: C3F8, CO2 in N2
* *Insulated box
Possible monitor for CPossible monitor for C33FF88 & CO & CO22 ingress into ID volume ingress into ID volume
Suction by extraction to surface or UX15
trough
Sketches of piping for proposed pixel/SCT volume C3F8 in N2 sonar analyzer/sniffer: Left: Phase 1 installation with single tube. Right: second phase with second tube and possible effects sampling of CO2
NIM Crate (5U)
Rack for USA15 position Y59—24-A2 : neighbouring rack height ~ 38U (short)
6U panel with pneu-matic valves, actuators,
air regulator behind
FRONT REAR
98
cm s
ona
r tu
be
(ini
tial)
SHELF
56cm
so
nar
tu
be
(1 o
r 2
late
r)
Act
ive
C f
ilter
(d
iim. u
nkn
ow
n)
4 U panel: E-LMB, TVC, bias supplies for xducers
etc. behind panel
LOGIC ANALYZER ON PROJECTING FRONT SHELF
Assume 50/50 depthwise split for panel-mounted electronicsand vertically-mounted sonar
tubes
Space for thermo-circulator :
choose to fitValve selection between
mixed water & chiller
Sonar tube lengths are internal,between flanges:
Tubes assumed to be inIndividual Armaflex jacketng
56cm
so
nar
tu
be
(1 o
r 2
late
r)
In addition to sniffer tubesand air extraction, rack requires
8 bar compressed air entry, mixed water entry/exit
and selection between M.W. and chiller
56cm
so
nar
tu
be
(1 o
r 2
late
r)
Example (1) of Valve Driving and Position sensing reconciliation (CPPM)
Example (2): single Valve Driving and Position sensing reconciliation
Present status:Present status:
Sonar should have resolution to do (sub percent 10-3 -10-4) C3F8 in N2
Marzio and Beniamino are prioritizing with Jan for priority to finish the work in USA15 before the end of
the year so to have at least a manual readout.